Get Balance from providers not working

[princepspolycap]

I have been trying to get the balance from an account that is on the Gnosis Chain. I tried to get the balance on the Ethereum chain too and I haven't been able to. All the providers I have tried return null.

WalletConnectProvider walletConnectProvider = WalletConnectProvider.fromRpc(
   {100: 'https://rpc.gnosischain.com/'},
   chainId: 100,
   network: 'xdai',
 );

 final rpcProvider = JsonRpcProvider('https://rpc.gnosischain.com/');

 Future<BigInt> getBalanceOf(String tokenAddress, String address) async {
   final contract = ContractERC20(tokenAddress, provider);
   return contract.balanceOf(address);
 }

 Future<BigInt> getNativeTokenBalanceOf(String address) async {
   try {
//      return await getBalanceOf(stakeTokenAddress, testAccountAddress);
//      return await provider!.getSigner().getBalance(ethTokenAddress);

   } catch (error) {
     _error = "${error.toString()} $rpcProvider";
     return BigInt.zero;
   }
 }

Can anyone let me know what I'm doing wrong?

[patzu]

Could you find a solution for this?

[4xMafole]

Did you add this to the below script in your web/index.html file?
<script src="https://cdn.ethers.io/lib/ethers-5.2.umd.min.js" type="application/javascript"></script>
I was facing a different issue of writing to the blockchain since I was missing the line. So, give it a try and hope it helps.